Trolley-guard.



M. SZWARGULSKI. TROLLEY GUARD.

' APPLICATION FILED JAN; 27, 1913.

1,073,303, Patented Sept. 16, 1913.

2 SHEETSSHEET 1.

ing the manner in which the guard acts to l at in snares MIKOLAJSZWARGULSKI, or sr. LOUIS, MIssoUaI.

TROLLEY-GUABD.

To all whom it may concern:

Be it known that I, MIKOLAJ SZWARGULSKI, a citizen of the United States,residing at St. Louis, State of Missouri, have invented certain new anduseful Improvements in Trolley-Guards; and I do declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the artto which it appertains to make and usethe same.

This invention relates to improvements in trolley guards. 7

One object of the invention is to provide a trolley guard having animproved means for positively preventing the casual disengagement of thetrolley wheel from the trolley wire when passing around curves or at thecrossing or switching points of the wires.

Another object of the invention is to provide a trolley guard, which,when the trolley is passing over wire crossing members or switchmembers, will form a contact device which will prevent the circuit beingbroken when the trolley wheel jumps or Specification of Letters Patent.

Application filed January 27, 1913.

passes from one part of the crossing or switch member to another part.

IVith these and other objects in view the invention consists of certainnovel features of construction, and the combination and arrangement ofparts as will be more fully described and claimed.

In the accompanying drawings; Figure 1 is a side View of the upper endof a trolley pole and the trolley wheel with my improved guard appliedthereto and showing the position of the guard as the trolley wheel isabout to pass onto a switch; Fig. 2 is a similar view showing theposition of j the guard immediately after the wheel has engaged theswitch; Fig. 3 is a central vertical sectional view of the trolley poleand wheel and a portion ofthe switch showprevent the breaking of thecircuit when the trolley wheel passes from one part of the switch toanother. Fig. 4 is a vertical cross sectional view on an enlarged scaletaken on line 4-4 of Fig. 1; Fig. 5 is a plan View of the switch shownin Figs. 1, 2 and 3 of the drawings; Fig. 6 is a side view of the upperend of the trolley pole and the trol- Patented Sept. is, 1913. SerialNo. 744,571.

ley wheel showing the same engaged with a wire crossing member andillustrating the manner in which the guard acts to' prevent the breakingofthe circuit when the trolley wheel passes from one part of saidcrossing member to another part; Fig. 7 is a perspective view of aportion of the crossing member shown in Fig. 6.

Referring more particularly to the drawings, 1 denotes a trolley polewhich may be of any suitable construction and is here shown as oftubular form and provided on its end with parallel bearing lugs 2between which is revolubly mounted the trolley wheel 3.

My improved guard comprises a weight 4 which is preferably ofrectangular form and has on its upper end a reduced tongue 5 which fitsloosely between the lower portion of the bearing plates 2 and the upperend of the trolley pole and is pivotally engaged with a weightsupporting pin 6 arranged through the plates 2 and secured therein inany suitable manner. The upper portion of the lower side of the pole 1has formed therein a stop notch 7 with which the adjacent upper cornerof the weight 4 is adapted to be engaged when the trolley guard is inthe position for forming a contact as shown in Fig. 3 of the drawingssaid engagement of the weight with the notch limiting the movement ofthe guard in this direction. On the opposite upper corner of the weightis formed a stop lug 8 which is adapted to engage a cross bar 9 arrangedbetween the plates 2- whereby the movement of the guard in the oppositedirection is limited.

Secured to the sides of the weight t are upwardly projecting spring arms10, the upperends of which terminate at a point a suitable distanceabove the trolley wheel and on said upper ends of the arms are formedinwardly projecting parallel bearing lugs 11 between which are revolublymounted contact rollers 12. The rollers 12 are normally held inengagement with each other to close the space between the arms or lugs11 thereon by the spring. arms 10, said arms being sufiiciently flexibleto permit the rollers l2'to separate when brought into engagement withthe blades or; deflecting V guard acts to prevent the plates 13 of aswitch 14: as shown in Figs. 2, 3 and 5 of the drawings or with the wireattachingplates 15 of the crossing member 16 as shown in Figs. 6 and 7of the drawings. The inner ends of the deflecting blades 13 of theswitch member and the wire attaching plates 15 of the crossing memberhave their inner ends beveled or wedge shaped to more readily separatethe rollers 12 when brought into engagement therewith. My improved guardin addition to forming an efficient means for preventing the trolleywheel from disengaging or leaving the trolley wire as clearly shown inFig. 4: of the drawings also forms a reliable contact device forpreventing the breaking of the circuit when the trolley wheel passesfrom one part of a switch or crossing member to another. In Figs. 2 and3 of the drawings is shown the manner in which the breaking of thecircuit as the trolley wheel passes from one part of the switch toanother. ence to Fig. 2 it will be seen that as soon as the rollers ofthe spring contact arms 10 come into engagement with the outer end ofone of the blades or plates 13 of the switch that the guard will beswung on its shaft or pivotal support 6 to an inclined position whereinthe rollers are disposed some distance in rear of the contacting surfaceof the trolley wheel. The guard will be held in this inclined positionby the frictional engagement of the rollers with the blades of theswitch as long as the rollers engage the blades so that after thetrolley wheel leaves the inner end of one blade and until said wheelcomes into engagement with another blade of the switch the rollers 12will remain in contact or engagement with the blade which the trolleywheel has left so that either the trolley wheel or the rollers of theguard are continuously in contact with some part of the switch. It willthus be seen that the electric circuit passing from the switch to thetrolley wheel will not be broken when the wheel leaves one part of theswitch to engage another part thereof. In the same manner the circuit isprevented from being broken when the trolley wheel passes under 'acrossing member and in order to facilitate this operation of the guard,I preferably provide a crossing member comprising a circular head orblade supporting plate 17 on which is arranged an upwardly extendingshank 18 which may be attached to suitable bracing and supporting wiresin any suitable manner. In the center of the lower side of the head 17and projecting downwardly therefrom is a depending contact post 19 withwhich the trolley wheel and the rollers 12 of the guard are engaged whenpassing from the inner end of one of the contact plates or blades 15'toanother as is clearly By referillustrated in Fig. 6 of the drawing.- Thecontact blades or plates 15 of both the crossing member and the switchhaveformed on their inner ends longitudinally extending attachingfingers20 which are engaged with sockets 21 in thehead 17 of the crossingmember or sockets 22 in the ends of the plate 14 of the switch, saidfingers being firmly secured in said sockets by set screws 23 as shown.9

When the trolley wheel is in engagement with the straight stretches ofthe trolley wire the guard is held in position to prevent thedisengagement of the trolley wheel from the wire by the weight 4t whichacts as a pendulum and swings the trolley guard to. a vertical positionas shown in Figs. 1 and 4: of the drawings, in which position therollers 12 are held in engagement by the spring action of the arms 10and thus prevent the casual disengagement of the trolley wheel from thetrolley wire and also from the.

plates or blades 13 of the switch or the blades 15 of the crossingmember," said blades or plates being provided on their lower edges withenlarged ribs or beads 24 which serve to prevent the rollers fromslipping out of engagement with the plates when the end of the trolleywheel and pole are pulled downwardly from any cause.

Fromthe foregoing description taken in connection with the accompanyingdrawings, the construction and operation of the invention will bereadily understood without requiring a more extended explanation.Various changes in the form, proportion and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advan tages of the invention as claimed.

Having thus described my invention, what Iclaimis; j,

In a trolley guard, a trolley pole having on its upper end bearingplates, across bar connecting the lower portion of said plates, atrolley wheel revolubly mounted in the upper portion thereof, a guardoperating weight pivotally mounted between the lower portion of saidplates and adapted to swing between the end of the trolley pole and thecross bar connecting the plates, 21 bar engaging lug formed on saidweight, spring of inwardly extending.

between sa1d lugs said rollers" being held n operative engagement by thespring action of said arms whereby the trolley wheel is prevented frombeing casually disengaged from the trolley wire and whereby when saidrollers are brought into engagement with the parts of a trolley wireswitch or crossing member, said guard will be swung to an inclinedposition wherein the contact rollers Will engage the parts of the switchor crossing member in rear of the my hand in presence of subscribingWit- 10 ness.

in point thereon engaged by the trolley Wheel, MIKOLAJ 5 SZWARGULSKI.thus preventing the breaking of the elecmark trio circuit when thetrolley Wheel passes Vitnesses:

from one part of the swltch member to another part thereof. In testimonywhereof I have hereunto set or crossing BoLnsLAW LnWANDosKI,

ADAM J. PUZNIAK,

J. E. WHITE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C.

